most furbearing animals start to rub their winter coats on trees and other objects to mark teritory due to breeding. big boar **** rub a lot in January. and you will start to see it on fox and coyote very soon. even later in the season furbearing animals will start to loose their winter coat for spring. i dont know but im guessing they start to itch when their summer coat starts to come in. this is when you start getting your cotton mink in febuary.